JP6803292B2 - Sit lift device - Google Patents

Description

The present invention relates to a stool lifting device.

For elderly people who are physically weak, physically handicapped people, etc. who need help or assistance such as nursing care / support for bathing, they enter the bathtub from outside the bathtub, soak in the bathtub, and then go out of the bathtub again. The operation of bathing is a heavy burden. Therefore, an elevating device that reduces the burden of bathing operation has been proposed (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-049414

This lifting device is provided with a handle that also functions as a backrest, but since this handle is fixed to a support column, the seated person sitting on the seat of this lifting device is in a raised state. Must be seated at. Therefore, when the person using this elevating device has physical strength, he / she cannot take such a posture even when he / she wants to lean backward and take a relaxed posture.

It is an object of the present invention to provide a stool elevating device that can be used both when the seated person needs to lean back and when the seated person wants to lean backward from the seating position. To do.

The stool lifting device of the present invention includes a stool member, a lifting mechanism installed in the bathtub to raise and lower the stool member, and a guide extending from the upper side of the edge of the bathtub to the lower side of the bathtub to guide the raising and lowering of the stool member. A stool elevating and lowering including a member, a backrest member extending rearward from the stool member, a support member for supporting the backrest member, and a rotating member for rotating the backrest member with respect to the support member. In the device, the backrest member moves the backrest member from the backrest position behind the stool member to the side arm resting position by rotation in the rotating member, and the stool lifting device When the backrest member is located at the arm resting position, there is an open space behind the stool member that allows a person sitting on the stool member to tilt his / her upper body in a direction away from the stool lifting device.

According to the stool lifting device of the present invention, it can be used both when the seated person needs to lean back and when the seated person wants to lean back behind the seating position.

It is a perspective view which shows the state which the stool lifting device of one Embodiment of this invention is installed in a bathtub. It is a side view which looked at the stool lifting device of FIG. 1 from the front side. FIG. 2 is a side view showing a state in which the drive unit of the stool lifting device of FIG. 2 is extended and the stool member is raised. FIG. 3 is a perspective view showing a state in which the backrest member and the handle of the stool lifting device of FIG. 1 are rotated with respect to the support member. It is a top view of the stool lifting device of FIG. It is schematic cross-sectional view which shows an example of the engagement state of a support member and a rotating member. It is a perspective view which shows the state which the backrest member of the stool lifting device of FIG. 1 is in an arm resting position. It is a side view of the stool lifting device shown in FIG. It is a figure which shows the back side of the backrest member.

Hereinafter, the seat lifting device according to the embodiment of the present invention will be described with reference to the drawings. The embodiments shown below are merely examples, and the seat lifting device of the present invention is not limited to the following embodiments.

As shown in FIG. 1, the stool elevating device (hereinafter, simply referred to as an elevating device) 1 of the present embodiment includes a stool member 2, an elevating mechanism 3 installed in a bathtub Ba to raise and lower the stool member 2. A guide member 4 extending from the upper side of the edge E of the bathtub Ba to the lower side of the bathtub Ba to guide the ascending / descending of the stool member 2, a backrest member 5 extending rearward to the stool member 2, and a backrest member 5 A support member 6 for supporting is provided.

The elevating device 1 is installed and used in the bathtub Ba, and as shown in FIGS. 2 and 3, the elevating device 1 is used to elevate and lower the stool member 2 between the upper side and the lower side of the bathtub Ba, so that the bather can take a bath. Support, etc. In the present embodiment, the elevating device 1 is attached to the bathtub Ba, and as shown in FIG. 3, the stool member 2 is raised to the upper side of the edge E of the bathtub Ba, and the bather is placed on the stool member 2. After the bather gets on the stool member 2, the stool member 2 is lowered toward the bottom B of the bathtub Ba as shown in FIG. 2, and the bather is bathed. When the bathing of the bather is completed, the stool member 2 is raised again to take the bather out of the bathtub Ba. In the present specification, the term "upper side" means the upper side of the edge E of the bathtub Ba, and the term "lower side" means the bottom portion B side of the bathtub Ba. Further, in the present embodiment, the side where the backrest member 5 is provided is "rear" with respect to the central portion of the seat surface of the stool member 2, and the backrest member 5 is relative to the central portion of the seat surface of the stool member 2. The side opposite to the side on which is provided is called the "front". In general, a bather bathes so that the center line (midline of the human body) of the bather's body is substantially parallel to one edge E of the bathtub Ba to which the elevating device 1 is attached. The front side of the human body is generally "front" and the back side is "rear" when the stool member 2 is raised or lowered or in a bathing posture. Further, in the elevating device 1, the "side" means a direction side perpendicular to both the front-rear direction and the up-down direction connecting the above-mentioned "front" and "rear". The terms "upper side", "lower side", "front", "rear", and "side" described above are only used to indicate the relative directionality with respect to the reference member, and the direction. And the angle are not limited.

In the present embodiment, the elevating device 1 has a mounting portion A attached to the edge E of the bathtub Ba, as shown in FIGS. 1 to 3. The structure of the attachment portion A is not particularly limited as long as the elevating device 1 can be attached to the bathtub Ba. In the present embodiment, as shown in FIGS. 2 and 3, the attachment portion A is attached to the bathtub Ba so as to straddle the edge E of the bathtub Ba and sandwich the inner surface and the outer surface of the bathtub Ba.

The elevating mechanism 3 is a mechanism for elevating and lowering the stool member 2 to elevate and lower an elevating object such as a bather. The shape and structure of the elevating mechanism 3 are not particularly limited as long as the stool member 2 can be elevated and lowered. As shown in FIGS. 1 to 3, for example, the elevating mechanism 3 causes the fluid to flow into the drive unit 31 having a filling unit for filling the fluid, and discharges the fluid from the drive unit 31, so that the seating member 2 It can be a fluid drive mechanism that raises and lowers. Further, the elevating mechanism 3 may be a mechanical drive mechanism that raises and lowers the stool member 2 by operating a power transmission unit such as a link mechanism provided under the stool member 2. Further, the elevating mechanism 3 may use both a fluid and a mechanical power transmission unit.

In the present embodiment, as shown in FIGS. 1 to 3, the elevating mechanism 3 includes a drive unit 31 having a filling portion inside which is filled with a fluid such as water. The drive unit 31 is connected to a fluid supply source (not shown) that supplies fluid such as a faucet or a pump via a supply path 7 (see FIGS. 2 and 3) such as a hose, a pipe, or a tube, and is connected to the drive unit 31. When the fluid is supplied to 31, the drive unit 31 extends and raises the stool member 2. Further, the drive unit 31 is connected to a discharge path 8 such as a hose, a pipe, and a tube, and contracts by discharging a fluid from the discharge path 8 to lower the stool member 2.

In the present embodiment, as shown in FIGS. 2 and 3, the drive unit 31 has a bellows portion having alternating peaks and valleys. Further, in the present embodiment, both ends of the drive unit 31 in the axis X direction (see FIG. 3) of the drive unit 31 are closed to define a filling portion which is an internal space of the drive unit 31. In the present embodiment, as shown in FIGS. 2 and 3, the bellows portion expands and contracts due to the filling and discharging of the fluid into the drive portion 31, the length of the drive portion 31 in the axis X direction fluctuates, and the seat member Move 2 up and down.

The guide member 4 guides the ascent and descent of the stool member 2. In the present embodiment, as shown in FIGS. 2 and 3, the stool member 2 is directly or indirectly connected to the guide member 4, and when the stool member 2 moves up and down by the elevating mechanism 3, the guide member 4 moves. The stool member 2 moves along the extending direction. In the present embodiment, the guide member 4 is a rod-shaped member extending along the elevating direction of the stool member 2, but the shape of the guide member 4 is not particularly limited as long as the stool member 2 can be guided in the elevating direction. For example, the guide member 4 may be a plate-shaped member or a rail-shaped member having grooves or ridges capable of guiding the stool member 2. The material of the guide member 4 is not particularly limited, but it is preferable that the guide member 4 has a predetermined rigidity in order to support the load applied to the stool member 2 and the stool member 2. In the present embodiment, as shown in FIG. 1, the elevating device 1 has a pair of guide members 4, and the stool member 2 is guided by the pair of guide members 4. The number of 4 is not particularly limited.

The stool member 2 is a member on which a person can sit. In the present embodiment, the bather who enters the bathtub Ba sits on the stool member 2. The shape and structure of the stool member 2 are not particularly limited as long as a person can sit on it. In the present embodiment, the stool member 2 is configured to have a circular seating surface as shown in FIG. 1, but may have other shapes. The stool member 2 may be configured to rotate about an axis substantially perpendicular to the seating surface of the stool member 2. In this case, the bather can easily change the orientation of the body by rotating the stool member 2.

In the present embodiment, as shown in FIGS. 1 to 3, the stool member 2 slides along the stool portion 21 and the guide member 4, and assists the ascending / descending movement of the stool portion 21. It has a connecting portion 23 that connects the stool portion 21 and the auxiliary portion 22. The stool portion 21 is a member that raises and lowers by the elevating mechanism 3, and constitutes a seating surface on which a bather sits. In the present embodiment, the stool portion 21 is provided above the drive portion 31.

The auxiliary portion 22 slides along the guide member 4 to assist the elevating movement of the stool portion 21 along the elevating direction. The auxiliary portion 22 is slidably connected to the guide member 4 and is connected to the stool portion 21 via the connecting portion 23. The auxiliary portion 22 moves up and down together with the stool portion 21 as the stool portion 21 is moved up and down by the elevating mechanism 3. The auxiliary portion 22 may have a shape and structure corresponding to the shape and structure of the guide member 4 to which the auxiliary portion 22 is guided. In the present embodiment, the auxiliary portion 22 is configured in a substantially tubular shape through which a rod-shaped guide member 4 extending in the elevating direction can be inserted inward.

The connecting portion 23 directly or indirectly connects the stool portion 21 and the auxiliary portion 22. The shape and structure of the connecting portion 23 is not particularly limited as long as the stool portion 21 and the auxiliary portion 22 can be connected. In the present embodiment, as shown in FIGS. 2 and 3, the connecting portion 23 is an arm-shaped member extending from the auxiliary portion 22 in a substantially vertical direction (horizontal direction) with respect to the inner surface of the edge E of the bathtub Ba. , The stool portion 21 is connected to the side surface of the arm-shaped connecting portion 23, and the auxiliary portion 22 is connected to the end portion of the arm-shaped connecting portion 23.

In the present embodiment, the connecting portion 23 moves up and down together with the stool portion 21 and the auxiliary portion 22 as the stool portion 21 is moved up and down by the elevating mechanism 3. The connecting portion 23 has rigidity that regulates the separation position of the seat portion 21 with respect to the guide member 4. As a result, the stool portion 21 can move up and down with respect to the guide member 4 while maintaining a predetermined separation distance in the horizontal direction. Therefore, the ascending / descending operation of the driven seat portion 21 can be stabilized.

The support member 6 supports the backrest member 5. In the present embodiment, the support member 6 is directly or indirectly connected to the stool member 2 and is configured to move up and down together with the stool member 2 as the stool member 2 moves up and down. In the present embodiment, the support member 6 is connected to the stool member 2 via the connecting portion 23.

In the present embodiment, the support member 6 extends upward from the seat member 2 as shown in FIGS. 1 to 3. In the present embodiment, since the support member 6 extends upward from the stool member 2, the backrest member 5 is positioned above the seating surface of the stool member 2, and the bather is backed by the backrest member 5. Can be leaned against. In addition, "extending upward" means that the support member 6 extends toward a position higher than the seating surface of the stool member 2 without hindering the seating of the bather. In the present embodiment, the support member 6 extends upward in the vertical direction, but may extend in a direction inclined with respect to the vertical direction. In the present embodiment, the support member 6 extends upward from the side of the stool member 2, but the position where the support member 6 is provided is a position where the backrest member 5 can be supported. There is no particular limitation.

The shape of the support member 6 is not particularly limited as long as it can support the backrest member 5. In the present embodiment, as shown in FIG. 1, the support member 6 is a pair of connections provided substantially parallel to each other on the front side and the rear side of the seat portion 21 with the central portion of the seat surface of the seat portion 21 interposed therebetween. It has a pair of support portions 61 and 62 that are connected to the portion 23 (see FIG. 5) and extend upward with respect to the seat member 2. In the present embodiment, one of the support portions 61 has an upright portion 61a that curves upward from the connection portion with the connection portion 23 and extends upward toward the rear side above the upright portion 61a. It has a part 61b. The backrest member 5 is directly or indirectly connected to the extending portion 61b. In the present embodiment, the backrest member 5 is connected to the extending portion 61b via a rotating member 9 (see FIG. 1 and the like) described later. Similarly, the other support portion 62 has an upright portion 62a that curves upward from the connection portion with the connection portion 23 and an extending portion 62b that extends forwardward above the upright portion 62a. Have. A handle H, which will be described later, is directly or indirectly connected to the extending portion 62b. Further, in the present embodiment, as shown in FIG. 1, the support member 6 has a connecting portion 63 that connects the pair of supporting portions 61 and 62 to each other. The connecting portion 63 improves the strength of the support member 6 and also functions as a backrest when the bather sits on the stool portion 21 from the edge E of the bathtub Ba.

The material of the support member 6 is not particularly limited as long as it can support the backrest member 5, but the load applied to the elevating device 1 including the backrest member 5 when a bather leans against the backrest member 5. It is preferable that it has a rigidity capable of supporting.

The backrest member 5 supports the back of the bather when, for example, the bather is lifted or lowered by the elevating device 1, or when the bather leans from the back side while taking a bath. As shown in FIG. 1, the backrest member 5 extends to the rear side of the stool member 2. The rear side of the stool member 2 means the rear side with respect to the central portion of the seating surface of the stool member 2. The backrest member 5 may be provided at a position where the bather can sit on the stool member 2 and functions as a backrest member 2. Further, the backrest member 5 may extend over a range that functions as a backrest, and does not need to extend over the entire rear part of the stool member 2. The backrest member 5 may have a contact surface that comes into contact with the human body.

The backrest member 5 is configured not only to function as a backrest, but also to rotate with respect to the support member 6 and also to function as an arm rest as described later. The shape of the backrest member 5 is not particularly limited as long as it can function as a backrest and an arm rest. In the present embodiment, the backrest member 5 has a rod member 51 extending from the support member 6 and a plate-shaped support 52 provided on the rod member 51.

The rod member 51 has rigidity enough to withstand the load applied from the plate-shaped support 52, and supports the plate-shaped support 52. In this embodiment, the rod member 51 extends in the horizontal direction from the support member 6 in order to position the plate-shaped support 52 in the backrest position, as shown in FIGS. 1 to 3. Note that extending in the horizontal direction means extending substantially horizontally from the support member 6, for example, the rod member 51 may extend in a straight line or may be curved. In the present embodiment, as shown in FIG. 1, the support member 6 is provided at a lateral position of the stool member 2 so as to sandwich the stool member 2 with the edge E of the bathtub Ba. As shown in FIG. 2, the rod member 51 extends horizontally from one of the support portions 61 and 62 of the support member 6 toward the edge E side of the bathtub Ba.

The plate-shaped support 52 has a contact surface S that comes into contact with a part of the human body such as the back and arms, and is in contact with the back of the bather on the surface, and when the bather puts the back and arms on the plate The load applied from the shape support 52 is dispersed, and the load when the bather comes into contact with the backrest member 5 is small. When the plate-shaped support 52 is used as a backrest, the plate-shaped support 52 is arranged so that the contact surface S faces the front side of the elevating device 1. In the present embodiment, the plate-shaped support 52 is configured to have a substantially trapezoidal shape as shown in FIGS. 1 to 3, but the shape of the plate-shaped support 52 is not particularly limited. The contact surface S of the backrest member 5 may be provided by a structure other than the plate-shaped support 52. For example, a support made of a flexible material may be provided on the outer periphery of the rod member 51 so that the back and arms of the bather come into contact with the support. Further, the backrest member 5 may have two contact surfaces for the back facing different directions and a contact surface for the arms.

In the present embodiment, as shown in FIG. 1, a handle H is connected to the support member 6 in addition to the backrest member 5. The handle H is gripped by the bather when the stool member 2 is raised or lowered or while taking a bath. In the present embodiment, the handle H extends from the other support portion 62 of the pair of support portions 61, 62. The handle H can be configured to rotate with respect to the support member 6, similar to the backrest member 5. The handle H can have the same structure as the backrest member 5 except that the plate-shaped support 52 is not provided, and as shown in FIGS. 1 to 3, the handle H has the rod member H1. ing. In the present embodiment, as shown in FIGS. 2 and 3, the rod member 51 of the backrest member 5 is configured to be lower in height in the vertical direction than the rod member H1 of the handle H. There is.

Further, in the present embodiment, the elevating device 1 includes a rotating member 9 that rotates the backrest member 5 with respect to the support member 6, and the backrest member 5 causes the backrest member 5 to rotate by rotation in the rotating member 9. It is configured to move from the backrest position behind the stool member 2 to the side arm resting position.

As shown in FIG. 5, the rotating member 9 rotates the backrest member 5 between the backrest position (see the solid line in FIG. 5) and the arm resting position (see the alternate long and short dash line in FIG. 5). The “backrest position” of the backrest member 5 is a position where the bather can support his / her back when he / she sits down and leans on the back side. Further, the "side" of the "side arm resting position" is the direction in which one arm of the bather is located, and the "arm resting position" of the backrest member 5 is when the bather is seated. , The position where one arm of the bather can be placed. The arm resting position may be a position on which the upper arm of the bather rests, or a position on which the elbow or forearm rests. Further, the backrest position and the arm resting position do not have to be two specific places, and may have a plurality of backrest positions and a plurality of arm resting positions.

The rotating member 9 connects the backrest member 5 and the support member 6 so as to rotate the backrest member 5 with respect to the support member 6. The structure of the rotating member 9 is not particularly limited as long as the backrest member 5 can be rotated with respect to the supporting member 6. In the present embodiment, the rotating member 9 rotates with respect to the support member 6 to rotate the backrest member 5, but if the backrest member 5 can be rotated, the rotating member itself does not rotate. There may be.

In the present embodiment, as shown in FIGS. 1 to 3, the rotating member 9 is shown as a curved member provided between the support member 6 and the backrest member 5 as a separate body from the backrest member 5. Has been done. As shown in FIG. 5, the rotating member 9 is connected to the extending portion 61b of the support member 6 and is configured to rotate about the rotation axis Ax with respect to the extending portion 61b. The rotating member 9 is formed in a tubular shape and is inserted inside the tubular support member 6 (extending portion 61b). In the present embodiment, as shown in FIG. 5, the rotating member 9 is formed in a substantially L-shape while being connected to the rod member 51 of the backrest member 5, and the rotating member 9 and the rod member 51 have an obtuse angle. Is doing. Further, the extending portion 61b of the support member 6 extends inwardly from the upper end of the standing portion 61a toward the tip of the extending portion 61b (see FIG. 5), and the rotation axis Ax of the elevating device 1 It slopes inward from the front side to the rear side. The shape and structure of the rotating member 9 are not particularly limited as long as the backrest member 5 and the support member 6 are connected so that the backrest member 5 rotates with respect to the support member 6. The rotating member 9 may be integrally formed with the backrest member 5.

In the present embodiment, when the backrest member 5 is rotated between the backrest position and the arm resting position by the rotating member 9, the backrest member 5 is held at the backrest position and the arm resting position. It is configured. The structure for holding the backrest member 5 at the backrest position and the arm resting position is not particularly limited. For example, as shown in FIG. 6, the rotating member 9 is provided with an engaging portion 91, and the supporting member 6 is engaged with the engaging portion 91 of the rotating member 9 in the direction around the rotating shaft Ax (see FIG. 5). Engagement portions 64a and 64b can be provided. In this case, the rotation of the rotating member 9 is restricted to a predetermined range, and the engaging portion 91 of the rotating member 9 and the engaged portions 64a and 64b of the support member 6 engage with each other, so that the backrest member 5 is backed. It is held in the leaning position and the arm resting position. In the present embodiment, the engaging portion 91 of the rotating member 9 is a protrusion protruding from the outer periphery of the rotating member 9, and the engaged portions 64a and 64b of the supporting member 6 are predetermined in the circumferential direction of the supporting member 6. Both ends of a long hole or guide groove (see FIG. 5) provided in a range. In the structure of holding the backrest member 5 at the backrest position and the arm resting position, for example, the support member 6 is inserted inside the tubular rotating member 9, and a long hole, a guide groove, or the like is provided on the rotating member 9 side. A long hole, a protrusion that engages with both ends of the guide groove, or the like may be provided on the support member 6 side, or another engaging mechanism may be used.

Further, the elevating device 1 provides an open space behind the stool member 2 in which a person sitting on the stool member 2 can tilt the upper body in a direction away from the elevating device 1 when the backrest member 5 is positioned at the arm resting position. Have in. The "direction away from the lifting device 1" is the direction toward the rear from the stool member 2, and the "open space in which the upper body can be tilted" is the bathing when the backrest member 5 moves to the arm resting position. It means that the elevating device 1 does not have a member or the like that blocks the tilting of the bather's body when the upper body is tilted on the back side, that is, the rear side of the person. In the present embodiment, as shown in FIG. 5, both the backrest member 5 and the handle H are rotatable, an open space is provided in the front-rear direction of the elevating device 1, and the seat member 2 is in the front-rear direction. The open space may be communicated. When the backrest member 5 has a contact surface with the back of the seated person who functions as a backrest in the backrest position, when the backrest member 5 is located in the arm resting position, the contact surface comes into contact with the arm of the seated person. Can function as a surface.

As described above, the elevating device 1 is configured so that the backrest member 5 moves from the backrest position to the arm resting position, and when the backrest member 5 is located at the arm resting position, it is behind the stool member 2. It has an open space. As a result, the same lifting device 1 can be used for both the bather who needs a backrest and the bather who wants to tilt the upper body behind the seating position. Further, when raising and lowering the stool member 2, the bather can move up and down in a stable state by leaning against the backrest member 5 in the backrest position, and after the stool member 2 descends, bathes in the bathtub Ba. When doing so, the backrest member 5 can be moved to the arm resting position, and the upper body can be tilted backward to relax and take a bath. Further, since the backrest member 5 is used as an arm rest, as shown in FIG. 7, when the bather leans his / her upper body backward, one arm is placed on the backrest member while being immersed in the bathtub Ba. Even if it is placed on the bathtub and the upper body is tilted down, the posture does not easily collapse, and even a weak person can suppress an accident such as drowning in the bathtub. In addition, when the bather finishes bathing and raises the elevating device 1 and the bather gets up from the state where the upper body is tilted backward, the upper body can be easily raised by using the backrest member 5 in the arm resting position. it can.

Further, in the present embodiment, the backrest member 5 in the arm resting position is configured to be located behind and to the side of the backrest member 5 in the backrest position, as shown in FIGS. 5 and 7. Has been done. As a result, when the bather tilts his / her upper body backward, the backrest member 5 is located near the arm, so that the bather's arm can be easily placed on the backrest member 5. In this case, for example, as described above, the rotating member 9 and the rod member 51 are formed in a substantially L shape, the rotation axis Ax of the rotating member 9 is inclined inward with respect to the front-rear direction, and the rotating member 9 is rotated. The angle may be set within a predetermined range.

Further, in the present embodiment, as shown in FIG. 8, the height of the plate-shaped support 52 of the backrest member 5 at the arm resting position is set to be the height corresponding to the height of the edge E of the bathtub Ba. , The backrest member 5 is held in the arm resting position. As a result, the height of one arm placed on the edge E of the bathtub Ba and the height of the other arm placed on the backrest member 5 are about the same, the posture during bathing is stable, and the bather can take a bath comfortably. it can.

Further, in the present embodiment, the plate-shaped support 52 is provided so as to be rotatable relative to the rod member 51, and the plate-shaped support 52 has a regulation mechanism R that regulates the relative rotation with respect to the rod member 51. doing. When the backrest member 5 rotates from the backrest position to the arm resting position, the direction of the contact surface S changes with the rotation of the backrest member 5, as shown in FIG. At this time, since the plate-shaped support 52 is configured to be rotatable relative to the rod member 51, the orientation of the contact surface S for mounting the arm on the plate-shaped support 52 as shown in FIG. Can be changed upwards. Further, in the present embodiment, since the plate-shaped support 52 has a regulating mechanism R that regulates the relative rotation with respect to the rod member 51, even if the arm is placed on the plate-shaped support 52 and a load is applied. The rotation of the plate-shaped support 52 is restricted. Therefore, the bather can comfortably take a bath by placing his arm on the plate-shaped support 52.

The structure that allows the plate-shaped support 52 to rotate relative to the rod member 51 is not particularly limited. In the present embodiment, as shown in FIG. 9, the plate-shaped support 52 has an insertion portion 52a into which the rod member 51 is inserted on the surface of the plate-shaped support 52 opposite to the contact surface S. However, the plate-shaped support 52 is configured to rotate around the axis of the rod member 51. In the present embodiment, the insertion portions 52a are formed in a tubular shape, and two insertion portions 52a are provided on the surface of the plate-shaped support 52 opposite to the contact surface S, but the number and shape of the insertion portions 52a are particularly large. Not limited.

The structure of the regulating mechanism R is not particularly limited as long as it can regulate the relative rotation of the plate-shaped support 52 with respect to the rod member 51. In the present embodiment, as shown in FIG. 9, the regulation mechanism R includes a guide portion Ra provided on the plate-shaped support 52 and a locking portion Rb provided on the rod member 51 and guided by the guide portion Ra. The guide portion Ra has a regulating portion Rc that regulates the relative rotation of the plate-shaped support 52 with respect to the rod member 51 by engaging with the locking portion Rb.

The guide portion Ra has a plate shape so that when a load within a predetermined range is applied to the plate support 52, the relative position of the locking portion Rb in the guide portion Ra does not change due to the regulation portion Rc. The relative rotation of the support 52 with respect to the rod member 51 is regulated. As shown in FIG. 9, the guide portion Ra may be formed of, for example, an elongated hole or a guide groove provided in the insertion portion 52a and provided with a predetermined length in the axial direction of the rod member 51. it can. Further, as shown in FIG. 9, the regulating portion Rc can be, for example, a long hole of the guide portion Ra or a convex portion protruding inward of the guide groove. Further, as shown in FIG. 9, the locking portion Rb is large enough to enter the guide portion Ra and is larger than the width of the position where the restricting portion Rc is provided, from the outer circumference of the rod member 51. It can be a protruding protrusion.

In the present embodiment, when the plate-shaped support 52 moves between the backrest position and the arm resting position, the locking portion Rb is deformed while the regulating portion Rc is deformed by the operating force applied to the plate-shaped support 52. It is possible to get over and change the direction of the plate-shaped support 52 to change the direction of the contact surface S. Further, after the plate-shaped support 52 changes its direction, even if a force within a predetermined range is applied to the plate-shaped support 52, the restricting portion Rc causes the locking portion Rb to be relative to the guide portion Ra. The change in position is regulated. Therefore, for example, even if a force is applied to the plate-shaped support 52 by the load of the arm at the arm resting position, the relative rotation of the plate-shaped support 52 is restricted and the direction of the contact surface S is set to a predetermined direction. Can be maintained.

In the present embodiment, when the backrest member 5 is in the backrest position, as shown in FIG. 9, the guide portion Ra of the plate-shaped support 52 is formed along the axial direction of the rod member 51. It extends in the vertical direction. When the contact surface S of the plate-shaped support 52 is oriented so as to function as a backrest, the locking portion Rb of the rod member 52 is located at the upper end of the guide portion Ra, and the upper end of the guide portion Ra and the locking portion Rb Are engaged. The force applied to the plate-shaped support 52 from the back is larger than the force applied to the plate-shaped support 52 from the arm, but in the present embodiment, the upper end of the guide portion Ra and the locking portion Rb are engaged. As a result, even if a large force is applied to the plate-shaped support 52 from the back, the upper end of the guide portion Ra is only pressed against the locking portion Rb, and the relative rotation of the plate-shaped support 52 is restricted.

The regulation mechanism R is not limited to the above-mentioned structure, and is at a predetermined angle as in the engaging portion 91 and the engaged portions 64a and 64b between the rotating member 9 and the supporting member 6 shown in FIG. When the plate-shaped support 52 rotates, the plate-shaped support 52 may be configured so that its rotation is restricted with respect to the rod member 51.

1 Lifting device 2 Stool member 21 Stool part 22 Auxiliary part 23 Connection part 3 Lifting mechanism 31 Drive part 4 Guide member 5 Backrest member 51 Rod member 52 Plate-shaped support 52a Insertion part 6 Support member 61, 62 Support part 61a, 62a Standing part 61b, 62b Extending part 63 Connecting part 64a, 64b Engagement part 7 Supply path 8 Discharge path 9 Rotating member 91 Engaging part A Mounting part Ax Rotating shaft B Bottom of bathtub Ba Bathtub E Bathtub edge H Hand H1 Rod member R Regulation mechanism Ra Guide part Rb Locking part Rc Regulation part S Contact surface X Drive part shaft

Claims (2)

Sit member and
An elevating mechanism installed in the bathtub to elevate and elevate the stool member,
A guide member that extends from the upper side of the edge of the bathtub to the lower side of the bathtub and guides the ascent and descent of the seat member.
A backrest member extending to the rear side of the seat member,
A support member that supports the backrest member and
A stool elevating device including a rotating member that rotates the backrest member with respect to the support member.
The backrest member moves the backrest member from the backrest position behind the stool member to the side arm resting position by rotation in the rotating member.
The stool lifting device
A stool lifting device having an open space behind the stool member that allows a person sitting on the stool member to tilt his / her upper body in a direction away from the stool lifting device when the backrest member is positioned at the arm resting position. .. The support member extends upward from the stool member and extends.
The backrest member has a rod member extending in the horizontal direction from the support member and a plate-shaped support provided so as to be rotatable relative to the rod member.
The stool lifting device according to claim 1, wherein the plate-shaped support has a regulating mechanism that regulates relative rotation with respect to the rod member.

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